Magazine for magnetic recording apparatus



June 4, 1946. Y l.. B. GREENLEAF MAGAZINE FOR MAGNETIC RECORDINGAPPARATUS Filed April 18, 1945 n n fifi finiti Patented .lune 4, 19462,401,632 l MAGAZINE Foa MAGNETIC ItEooItDING APPARATUS Leland B.Greenleaf, Elkhart, Ind., assignor to C. G. Conn,y Ltd., Elkhart, Ind.,a corporation of Indiana Application April 18, 1945, Serial No. 589,043

6 Claims.

This invention relates to magazines for magnetic recording apparatus andmore particularly to wire supply magazines adapted to be detachablyconnected to magnetic recording or reproducing devices to carry a supplyof wire therefor.

In handling wire for apparatus of this type, the wire tends to unwindfrom the spool on which it is carried when the machine is not inoperation. When the spool is carried in a housing or casing, the wirehas 'a tendency to spring over the flanges of the spool and to becometangled between the spool and the housing if tension i's not maintainedon the wire.

It is one of the objects of the present invention to provide a magazinecarrying a spool of wire in which the wire is prevented from springingover the spool flanges.

Another object is to provide a magazine including means yieldinglyengaging a flange on the spool to hold the wirel on the. pool.

Still another. object is to provide a magazine in which the spool isheld against one end of the housing when the housing is detached fromthe apparatus and spring fingers are provided engaging the spool flangewhich is spaced from the housing and to prevent the wire from springingover the flange.

The above and other objects and advantages of the invention will be morereadily apparent from the following description when read in connectionwith the accompanying drawing, in which- Figure 1 is an axial section ofa magazine embodying the invention.

Figure 2 is a section showing the position of the magazine parts wheninstalled on a recording or reproducing apparatus; and A AFigure 3 is asection on the line 3-3 of Figure 1. i

The magazine of the present invention comprises essentially a housingwhich'is adapted to be detachably mounted on a recording or reproducingapparatus and which carries a spool or' wire to be supplied to theapparatus. The housing, as shown, is formed of non-magnetic metal,plastic or the like and includes a main I housing part forming an endwall I0 and an annular side wall II shown as integral with the end wall.The end wall I is formed with a central opening I2 to receive. the shaftof the recording or reproducing apparatus and with an eccentric locatingopening I3 to receive a locating pin on the apparatus. A fastening plateIt is secured to the end wall l0 and projects beyond the periphery ofthe housing to be engaged by suitable fastening means on the apparatus.As shown, the end Wall III is offset outwardly at its central portionfor a purpose to appear later.

The main housing part is closed by a second end wall I5 secured to theside wall II as by stak ing, welding or the like. As shown, projectingfingers I6 on the side wall extend through openings in the end wall I5and are bent over to secure the end wall in place. The end wall I5 isformed with a circular flange Il extending partially over the side wallI i and terminating short of the'fastening plate I4 to provide space foran annular rotatable gate member I8. The gate member I8 is in the formof an annular strip having an opening I9 therethrough to register with acorresponding opening 2| in the side wall II when the gate is turned tothe proper position. To facilitate turning of the gate, a finger 22 issecured thereto to be engaged by the operator.

A spool is mounted in the housing and may be formed in any desiredmanner of sheet metal, plastic or the like with a central hub portion 23and end iianges 24 and 25. The endl flange 24 lies next adjacent the endwall I0 of the housing and is of a size to fit within the recess thereinso that when the parts are in the position shown in Figure 1 theiiange24 and outer portion of the end wall I0 provide a substantiallysmooth surface. The spool is urged toward the end wall I0 by a springshown as a leaf spring 26 carried in the housing and engaging theadjacent end of the spool. The spool is formed' with an opening toreceive the shaft of the apparatus and the spring 26 preferably overliesthe opening so that it will be engaged by the shaft when the magazine isinstalled on the apparatus.

To prevent wire on the spool from springing over the ange 25, thehousing is provided with annular spring means yielding to engage thisflange. As shown, the spring means comprises an annular series ofinwardly extending spring iingers 21 yieldingly engageable with theinner face of the flange 25 to prevent wire on the spool from passingbetween the flange 25 and the housing. The spring fingers areconveniently bent fron an annular spring strip 28 fitting within thehousing and are preferably closely spaced as best seen in Figure 3 toleave no space through which wire could pass.

When the spool is detached from the apparatus, the parts will occupy theposition shown in Figure 1 with the spring 26 pressing the ange 24 intothe recess in the end plate I0 and with the spring fingers 21 engagingthe inner face oi the ange .25. Preferably the spring 2 is stronger thanthe spring fingers 21 so-that the spool will be end of the housing, andannular spring means in v.the housing engageable with the inner face ofurged against the end wall I0. With the parts.

When the magazine is installed on a recording I or reproducing device,the shaft of the device indicated at 29 will extend through the openingin the spool to engage the spring 23 and move it away from the spool.formed with a collar 3i to engage the spool and y move it away from theend wali i@ of the nousl ing.r This movement is preferably sumcient tomove the iiange 25 away from the spring fingers 2l so'that the spool isfreely supported-in the housing. At this .time thegate i@ can be turnedtobring the openings l@ and i into register so that wire can freely bewithdrawn from or wound on the spool. Upon completion of a recording orreproducing operation, the end oi the wire pro1 Jecting through theregistering openings i@ and 2i' may be grippedvby turning the gate-idsubstantially to the position shown in'Figure d so that the wire will beheld under slight tension when the magazine is removed from theapparatus.

While one embodiment of the invention has been shown and described indetaii, it will be understood that this embodiment is illustrative onlyand is not intended as a definition of the scope of the invention,reference being had for this purpose to the appended claims.

. What is claimed isz.

1. A magazine for a, magnetic recording apparatus comprising a'substantially circular housing', a spool in the housing having acentral h'ub portion and end flanges, annular spring means in' thehousing engageable with the inner face of one of the flanges, and meansin the housing yielding- 1y urging the spool in a direction to cause thel spring means to engage the flange.

2. A magazine for a magnetic recording' apparatuscomprising asubstantially circular hous- Preferably the shaft is the flange whichisremote from said one end of the housing. l

3. A magazine for a magnetic recording apparatus comprising asubstantially circular h'ousing, a spool in the housing having a centralhub portion and en'd flanges, a spring in the housing engaging the spoolto urge it axially toward one end of' the housing, and an annular seriesci resilient fingers extending inwardly from Ithe housing to engage theinner face of the flange which is remote from said onel end of the housIing.

4. A magazine for a magnetic recording apparatus comprising asubstantially circular heusa ing, a spool in the housing having acentral opening, a spool in the housing having a central hub portion andend flanges, a spring in the housing engaging .the spool to urge itaxially toward one I ing' to receive a. shaft and having end flanges, a

springin the housing engaging the spool -to urge it axially towardoneend of l annular spring meansin the housing engageabie with vtheinner face of the flange remote from said one end of the housing,'theend of the shaft being engageable with the spring to move it awayfromthe spool whereby said flange can disengage the spring means.

-5. A magazine for a magnetic recording apparatus comprising asubstantially circular .housing, a spool in the housing having a centralopening to receive a shaft and having end flanges, a spring in thehousing engaging the spool to urge it axially toward one end of thehousing, and an annular series of resilient fingers extending inwardfrom the housing to engage the innerface of the flange remote from saidone end or the housing, the spring overlying the opening through thespool to be' engaged by the end of the shaft and moved away from thespool.

6. A magazine for a magnetic recording apf paratus comprising asubstantially circular housing. a spool in the housing havingfendflanges of.

different diameters, one end of the housing being recessed to receiveth'e flange of smaller diameter,

a spring in the housing. urging the spool toward face of thel iiange oflarger diameter.

LELAND B. GREEN LEAF.

the housing, and

